Window sash control and weather strip



1951 J. N. BOND 2,570,312

WINDOW SASH CONTROL AND WEATHER STRIP Filed Feb. 5, 1950 Jo/m /V. 00nd Gttomeg 5 Patented Oct. 9, 1951 'WINDOW SASH CONTROL AND WEATHER STRI John N. Bond, Clay County, M0,, assignor to Superior Weatherproof Corporation, Kansas City, Mo., a corporation of Missouri Application February 3, 1950, Serial No. 142,304

2 Claims.

This invention relates to a window sash control and weather strip and more particularly to a resilient metal strip for use in windows in which the sashes slide within the window frame.

The objects of the invention are to provide a formed resilient strip for use at the sides of sliding windows for resiliently engaging the sash and urging same against the stops to form a weathertight seal and provide friction contact with said sash to retain same in selected raised position and permit said sash to be easily raised and lowered; to provide a weather stripping which will serve as an effectual guide for the sash during sliding of same and which is formed with resilient contacting portions whereby cushion-like contact between the strip, adjacent marginal portions of the sash and frame will be constantly maintained; to provide a weather strip and sash control in combination with a window wherein the window sash is held in selected position Without the use of balances, said arrangement providing a cushion or resilient mounting of said sash which forms a weather seal and holds the sash and frame against objectionable relative movement with varying atmospherical conditions as well as avoiding rattling or vibration thereof; to provide a resilient strip with a longitudinally disposed guide rib adapted to slidably engage a guide groove in the marginal portions of the window sash, said guide rib resiliently urging the sash against a window stop; to provide the weather strip with longitudinally disposed resilient ribs or corrugations at the sides of the guide rib for resiliently engaging the marginal edge of the window sash to further aid in forming a weathertight seal; to provide a weather strip that is not affected by shrinking and swelling of the wood when installed in connection with wooden frames and sashes; and to provide a weather strip of this character which is simple and inexpensive to manufacture and which may be readily applied to conventional window sash and frames without alteration thereof.

In accomplishing these and other objects of the present invention, I have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawings, wherein:

Fig. 1 is a perspective view of a window equipped with window sash controls and weather strips embodying the features of the present invention.

Fig. 2 is a fragmentary perspective view of the window sash control and weather strip engaging the marginal portions of a window sash.

Fig. 3 is a horizontal sectional View through one side of the window frame and sash.

Referring more in detail to the drawings:

l indicates a conventional window frame including side jambs 2 having rabbet grooves 3 containing p rtin stops 4 which are located between outer blind stops 5 and inner sash stops 6 to form the usual sash grooves or guideways l and 8 on the opposite sides of the window. The parting stops 4 are preferably provided with channel-shaped covers ,9 formed of metal such as aluminum or the like, the legs IEI and H of said channels being clamped in engagement with the side faces of the parting stops. The covers 9 extend for the full length of the parting stops and are secured thereon by suitable fastening devices such as nails I2.

Upper and lower sash l3 and M are slidably mounted in the guideways l and 8, the side edges of said sash having conventional grooves l5 which in usual structures accommodate spring sash balances and the like. In windows of this character considerable space is required between the edges I 6 of the sash and the bottoms ll of the guideways as-indicated at l 8, and also between the marginal edges l9 and i9 of the inner and outer faces of the sash and the sides 20 and 2| of the guideways as indicated at 22. These spaces are necessary so that when the sash is swollen by dampness it will not stick or bind beyond the point of immobility. In dry weather conditions the sash and frame shrink, causing the space to enlarge, leaving the sash extremely loose so that there is considerable leakage in and around the sash. The conventional sash is also difficult to operate without binding or wedging due to insufficient guiding contact with the guideways. Such conditions have been improved by use of metal linings in the guideways and some weather sealing has been accomplished. by resilie ent strips engaging the edges of the window sash, but such strips are frequently bent, damaging the seal and permitting leakage around the window sash. Also such windows must have some form of balancing, for example, spring sash balances or weight balances.

As above pointed out, it is a principal object of the present invention to equip a window of the character described with a weather strip that may be readily applied Without alteration of the sash and which urges :the sash into sealin engagement with the stops and creates sufficient friction for supporting the sash in any selected position and thereby eliminate the use of any sash .balances.

23 designates a weather strip and sash control constructed in accordance with the present invention and which is formed of relatively thin, spring-like material of suitable thickness to engage within the space between the sash and their respective guideways. The strips 23 preferably are of such length as to extend the full opening height of the window frame or length of the guideways 1 and 8. Each of the strips 23 is formed with oppositely disposed basal flanges or portions 24 and 25 constituting the body portion proper of the strip. A longitudinally disposed, angularly extending guide rib 26 is formed in the body portion of the weather stripping'by bending same, whereby said rib is U-shaped as illustrated in Figs. 2 and 3, said rib having a width slightly less than the groove in the window sashand a height that will provide clearance between the rounded end 21 of the rib and the rounded bottom 28 of the groove it when the sash is mounted in the window frame as illustrated in Fig. 3. The strip 23 is also preferably provided with corruga tions or ribs 29 and 3!! extending longitudinally of the strip and located in the flanges 2 and respectively, said corrugations being of less height than the rib 26 and extending from the flanges in the same direction as the rib 26 whereby said corrugations resiliently engage the marginal edge of the window sash.

The flange 25 preferably is provided with a plurality of apertures 3| longitudinally spaced therein for receiving fastening devices such as nails 32 for rigidly securing the flange 24 to the window frame in engagement with the bottom of the guideways therein. The weather strip is preferably proportioned relative to the guideways and sash whereby when the flange! is secured to the frame the side edge 33 of said flan e engages the outer stop 5 or inner stop 6. The free edge 34 is spaced from the parting stop 4 sufficiently to provide for full movement of the window sash. Also the portions of the flanges 24 and '/5 immediately adjacent the rib 25 engage the bottom I! of the guideways and the corrugations or ribs 29 and extend from the bottom of the ways and resiliently engage the marginal faces of the e ges of the window sash. The normal spacing of the sash from the bottom of the ways being less than the normal height of the corru ations, the window sash will compre s said corrugations, tending to flatten same. The flattening effect from compressing thecorrugations and the natural resilienc built into the weather strip and the mounting of the weather strip with only the flange 24 secured to the window frame moves the rib 26 toward the parting stop 4 and through the engagement of the rib 26 with the guide groove [5 in the window s sh urges the window sash into engagement with the legs in and H of the parting stop cover 9 to provide a resilient seal therebetween. This arrangement provides four lines of sealing contact between the weather strip and guideways, said lines being the flanges on opposite sides of the corrugations 29 and 30. There is also sealing engagement of the strip and sash at the lines of contact of the corrugations 29 and 30 with the marginal edge of the sash and sealing contact of one side of the rib 26 with the groove l5 of the sash, but the most important sealing contact is between the sash and the legs l0 and H of the parting stop cover 9, as there is very little possibility of said leg being bent or otherwise distorted to harm the seal as frequently occurs with conventional weather stripping.

Points of contact of the window sash with the 4 weather strip and with the legs of the parting stop cover 9 being effected by the resiliency of the weather stripping provide the spring cushioning and also friction which is sufficient to retain the sash in any selected raised position, thereby eliminating any form of balances, however, the resiliency is such that the sash may be freely moved as desired. The resiliency is such that if the sash and frame are painted the sash can be ea ily broken loose from the frame to provide free movement of said sash and the paint will not interfere with the operation of the weather stripping as frequently occurs with conventional weather stripping.

Obviously with weather stri ping constructed as described, the sash is prevented from rattling and the joints about the same are securely closed to drafts, rain and the like re ardless of swelling or shrinking of the sash and frame, but the resiliency provides a cushioning effect as the wood of the sash and frame swell or shrink and prevents the sash and frame from binding. The weather stripping is so constructed that when the corrugations 29 and 38 are compressed and the sash held in enga ement with the legs I!) and II of the parting stop cover 9, the edge 34 of the flange 25 is spaced from the parting stop 4,- thereby maintaining the seal contact with the sash and parting stop cover regardless of wear due to long use.

It is believed obvious that I have provided an improved weather strip providing a positive weather seal and cushion sash control for retaining the sash in selected position, said strip being so designed that it will provide positive control and trouble-free operation for long periods of time.

What I claim and desire to secure by Letters Patent is:

l. A weather. stripping and cushion sash control formed of a single strip of spring metal including, basal flanges and an intermediate portion formed into an upstanding longitudinally disposed U-shaped guide rib throughout the length of the strip, one of said flanges having apertures for fastening devices for securing said flange along one edge of the bottom of sash guideways of a window frame, at least one of said flanges having an intermediate upstanding corrugation extending throughout the length of the strip, whereby the corrugations resiliently engage the side edges of a sash and the flanges the bottom of the guideways in the window frame, the rib and corrugation being disposed in the guideways in the frame relative to a groove in the sides of the sash, the side of the rib opposite the apertured edge of the strip resiliently engaging a side of the groove compressing the rib whereby the resiliency of the strip acts to urge the sash into resilient engagement with the parting stop of a window frame in which the strip is secured;

2. The combination of a window frame provided with a stop and parting stop forming a channel, a, sash having a side member fitting loosely in the channel and formed with a lengthwise groove in its end wall facing the bottom of the channel, and a resilient metallic strip lying within the channel and secured along the edge'of the bottom thereof remote from the parting stop, the opposite edge of said stripbeing spaced from the parting stop, said strip having an intermedi-' ate upstanding U-shaped rib extending throughout the length of the strip, said U-shaped rib having widely spaced sides entering the groovein the side member and resiliently engaging only the side thereof opposite the edge of the strip secured to the bottom of the channel, said resilient engagement laterally compressing the U-shaped rib, said strip having longitudinal upstanding corrugations on the opposite sides of the rib and of lesser height than the rib for resilient engagement with the end wall of the sash side member, said engagement of the side member with the corrugations tending to straighten same and urging the rib toward the parting stop forcing said side member into resilient sealing engagement with said parting stop, said engagement of the side member with th strip and stop providing friction which will hold the sash in selected elevated position without the use of balances.

JOHN N. BOND.

CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 19 Number Name Date 1,957,592 Heid May 8, 1934 2,109,556 Van Fleet Nov. 30, 1937 2284336 Lundgren May 26, 1942 

